The UK mobile carrier O2 released some usage stats from its smartphone user base, revealing that talking on the phone is only the fifth most popular thing (web surfing, facebooking/tweeting, gaming, and listening to music were all more popular). And as the Atlantic points out, thats not a trend exclusive to the UK, as other studies have shown people are talking less and less on their phones in the US as well. So if you're not talking on the phone, what occupies all your smartphone time? [The Atlantic]